Constructing bifunctional and robust covalent organic frameworks via three-component one-pot Doebner reaction for Cr(VI) removal

Hussain, Muzammil; Saddique, Anam; Devarayapalli, Kamakshaiah Charyulu; Kim, Bolam; Cheong, In Woo; Lee, Dae Sung

doi:10.1016/j.apcatb.2023.123672

Cited by 9 publications

(2 citation statements)

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“…Especially, upon light irradiation, reductive electrons can be generated within LDH materials, and subsequently, Cr(VI) to Cr(III) reduction reaction can thus occur at the surface-adsorbed Cr(VI) anchoring on the LDH surface. 36,37 Furthermore, the surface of the LDH material is rich in cationic charges, endowing it with excellent capacity in trapping heavy metal anions. Hence, in this work, MCr-LDH (M = Ni, Cu, or Zn) materials were synthesized and tested for the removal of Cr(VI) in solution (Scheme 1).…”

Section: ■ Introductionmentioning

confidence: 99%

“…The obtained CaCr-LDH exhibited remarkable performance in leather tanning, photocatalytic CO 2 reduction, and photocatalytic recycling of precious metals. Especially, upon light irradiation, reductive electrons can be generated within LDH materials, and subsequently, Cr(VI) to Cr(III) reduction reaction can thus occur at the surface-adsorbed Cr(VI) anchoring on the LDH surface. , Furthermore, the surface of the LDH material is rich in cationic charges, endowing it with excellent capacity in trapping heavy metal anions.…”

Section: Introductionmentioning

confidence: 99%

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Superstable Mineralization Coupled with Photocatalysis toward Cr(VI) Remediation Using Layered Double Hydroxide Material

Wang,

Ren,

Liu

et al. 2024

Ind. Eng. Chem. Res.

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The extensive utilization of chromium in electroplating, leather tanning, dyeing, and other industries has resulted in significant environmental pollution. Therefore, there is a pressing need for highly efficient materials to tackle the pollution caused by Cr(VI). Throughout the study, a variety of layered double hydroxides (LDHs) were synthesized, and the NiCr-LDH showed remarkable removal properties for the heavy metal chromium. The NiCr-LDH exhibits rapid equilibrium within 60 min and possesses a maximum capacity of 218 mg/g. Notably, when exposed to visible light, the ability of NiCr-LDH to remove toxic Cr(VI) anions is significantly improved, and it is capable of treating actual electroplating wastewater to remove the Cr concentration to well below 0.5 mg/L. In-depth analysis revealed compelling evidence that the highly toxic Cr(VI) anions transformed into harmless Cr(III) anions, resulting in an improved removal efficiency.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%